Is it normal i think ciggerates might tell you to quit as well?
Everyone is always going to make a buck off of cigarettes. If its rehab, quitting patches and medications or just selling the cancer stick itself.
There is man commercials and products helping you stop smoking but there is still a lot of products telling you to smoke. They also do this with diet soda however diet soda is also sold by the same company's that sell soda. So the company that sells coke will also sell diet coke.
What is the company's that sell cigarettes are also in charge of the anti cigarette company's. They know how to get you hooked but also know how to make you quit and even if you don't you are just going to buy more cigarettes.
So its a win win on both end. Now this is not actually illegal since they would not have a monopoly. Since there is several company's that sell cigarettes. So they have plenty of competition.